JPS5923060A - Valve opening pressure controller for fuel injection valve in diesel engine - Google Patents
Valve opening pressure controller for fuel injection valve in diesel engineInfo
- Publication number
- JPS5923060A JPS5923060A JP13168682A JP13168682A JPS5923060A JP S5923060 A JPS5923060 A JP S5923060A JP 13168682 A JP13168682 A JP 13168682A JP 13168682 A JP13168682 A JP 13168682A JP S5923060 A JPS5923060 A JP S5923060A
- Authority
- JP
- Japan
- Prior art keywords
- valve opening
- opening pressure
- valve
- fuel injection
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
- F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
ディーゼル機関の燃料噴射弁においては、弁体に着座力
を及ぼすプレッシャスプリングの初圧網状態の調節が、
調節ねじを適宜回動することにより行われるが、弁体が
弁座に着座している状態においてプレッシャスプリング
が弁体に及はず荷重（七ノド荷重）をどのような値に選
定するかについては問題がある。燃料噴射弁より噴射さ
れる燃料の霧化には、噴口径、噴射方向、噴口部および
燃焼室の形状、開弁圧等の種々の因子が関係する。[Detailed Description of the Invention] In a fuel injection valve for a diesel engine, adjustment of the initial pressure network state of a pressure spring that exerts a seating force on a valve body is
This is done by turning the adjustment screw appropriately, but what value to select for the load (seven throat load) that the pressure spring does not apply to the valve body when the valve body is seated on the valve seat. There's a problem. Atomization of fuel injected from a fuel injection valve is affected by various factors such as the diameter of the nozzle, the direction of injection, the shape of the nozzle and the combustion chamber, and the valve opening pressure.
これらの因子のうちの開弁圧について言えば、機関が高
速、高負荷の下に運転されているときに最も良好な霧化
状態が得られる如く開弁圧を選定すると、低速、低負荷
の下における機関の運転状態が不安定なものとなる。こ
のため開弁圧（従ってグレン／ヤスプリングの七ノド荷
重）は、高速。Among these factors, regarding the valve opening pressure, if the valve opening pressure is selected so that the best atomization state can be obtained when the engine is operated at high speed and high load, The operating condition of the engine below becomes unstable. For this reason, the valve opening pressure (and therefore the seven-stroke load on the Glen/Ya spring) is high.
高負荷運転と、低速、低負荷運転の双方を考慮に入れた
妥協的な値のものどして選定される。A compromise value is selected that takes into account both high-load operation and low-speed, low-load operation.
本発明は、従来性われている調節ナンドの回動によるセ
ット荷重の調整がプレッシャスプリングに例えば０．２
ｍｍと云うような僅かの量の伸縮を力えるだけですま
されると云う点に注目しつつ、以下図について説明する
如く、比較的簡単な構成の下に、開弁圧の自動制御が行
われるようにするものである。In the present invention, the adjustment of the set load by rotating the adjustment knob, which has been conventionally done, can be applied to the pressure spring by, for example, 0.2
The valve opening pressure is automatically controlled using a relatively simple configuration, as explained in the diagram below, while noting that only a small amount of force, such as 1 mm, is required to expand and contract. It is intended to do so.
第１図において、（１）ハノズル、（２）はノズル（１
）における弁体、（３）はノズルホルダ、（４）はプレ
ソシャピ／、（５）はプレランヤスプリングである。In Figure 1, (1) the nozzle, (2) the nozzle (1
), (3) is a nozzle holder, (4) is a pressoshapi/, and (5) is a pre-runner spring.
［６１＋７１はプレッシャスプリング（５）の両端を受
けるばね受座で、これらのばね受座＋６１ ＋７１のう
ち、上方のばね受座（７）が印加される電圧の変化によ
りその長さを変える圧電素子（８）を含むものとされて
いる。[61+71 are spring seats that receive both ends of the pressure spring (5), and among these spring seats +61 and +71, the upper spring seat (7) is a piezoelectric element whose length changes according to changes in the applied voltage. (8).
（９）は圧電素子（８）に加わる電圧を機関の回転速度
（１０）および負荷（１１）に応じて変える制御装置で
ある。制御装置（９）には機関の回転速度と機関の負荷
と開弁圧との間の関係がメモリに入れられ、メモリに応
じる開弁圧が得られるようにする電圧制御を行う。(9) is a control device that changes the voltage applied to the piezoelectric element (8) according to the rotational speed (10) of the engine and the load (11). The control device (9) stores the relationship among the engine rotational speed, the engine load, and the valve opening pressure in a memory, and performs voltage control to obtain the valve opening pressure according to the memory.
なお、負荷に応する信号は、燃料噴射ポンプのコントロ
ールラックの位置を検出する検出装置、捷たは、吸気管
内負圧を検出する検出装置より適当な変換装置を介して
得ることができる。また、制御装置（９）に投入される
信号としては機関の回転速度および負荷のほかに、燃料
噴射ポンプより燃料噴射弁に至る噴射パイプの内圧、機
関の潤滑系の油温等の他の因子を加えることができる。Note that the signal corresponding to the load can be obtained through a detection device that detects the position of the control rack of the fuel injection pump, or a detection device that detects the negative pressure in the intake pipe, or a conversion device that is more suitable. In addition to the engine speed and load, the signals input to the control device (9) include other factors such as the internal pressure of the injection pipe leading from the fuel injection pump to the fuel injection valve, and the oil temperature of the engine's lubrication system. can be added.
第２図は開弁圧をパラメータとして機関の負荷と回転速
度との間の関係を示す図面で、この図における一連の曲
線は開弁Ｌ１．がｐｌ ＋ ■）２ ＋ ｐ３１ Ｔ’
Ｊ６ ＋ ｐ５ｐ６とされる点を連ねるもので、ｐｌ・
ｐノー＞ Ｔ）ろ〜・ｐ４２ｐ５−・ｐ６である。ｐ６
は開弁ＩＥの最小値で、開弁ｊ］−はｐ６を超えて小さ
くされることはない。制御装置（９）が行う制御は機関
の回転速度と負荷とを変数としつつ行う連続的の制御で
、第２図はこの連続的制御の一部を示す〇
開弁圧の調節を調節ねじの回動により行う従来の燃料噴
射弁は、調節ねじの回動を自動的に行う系を付加して機
関の回転速度および負荷に応じる開弁圧が得られるよう
にすることができると考えられるのであるが、多気筒機
関につき、そのよう・な動作を行う系をンリンダヘノド
上に設けることは、設置空間、構造および必要とする操
作力等よりくる制約のために実現性に乏しい。それに対
し、本発明は、このような制約を伴うことなく、比較的
簡単な構成の下に開弁圧の自動制御が行われ得るように
するものである。なお、図示のものにおいて上方のばね
受座（７）の一部を形成するねじ部（１２とそれに嵌合
するナラｌ−＋１３１とは一連の燃料噴射弁につきそれ
らの性能を揃える調整に使用される。FIG. 2 is a diagram showing the relationship between the engine load and rotational speed using the valve opening pressure as a parameter, and a series of curves in this diagram represent the valve opening L1. is pl + ■)2 + p31 T'
J6 + p5p6 points are connected, and pl・
pNo> T) Ro~・p42p5−・p6. p6
is the minimum value of the valve opening IE, and the valve opening j]- is not made smaller than p6. The control performed by the control device (9) is continuous control using the engine rotational speed and load as variables. Figure 2 shows a part of this continuous control.〇The valve opening pressure is adjusted using the adjustment screw. Conventional fuel injection valves that operate by rotation may be able to add a system that automatically rotates the adjustment screw to obtain a valve opening pressure that corresponds to the engine speed and load. However, for a multi-cylinder engine, it is not practical to provide a system that performs such operations on the cylinder head due to constraints such as installation space, structure, and required operating force. In contrast, the present invention enables automatic control of valve opening pressure to be performed with a relatively simple configuration without such restrictions. In addition, in the illustrated example, the threaded part (12) forming a part of the upper spring seat (7) and the nut l-+131 that fits therein are used to adjust the performance of a series of fuel injection valves. Ru.
捷だ、本発明のものにおいて使用される圧電素子（８）
としては半導体素子、例えば７リコン半導体素子を選ぶ
ことが望ましい。Piezoelectric element (8) used in the present invention
It is desirable to select a semiconductor device, for example, a 7-recon semiconductor device.
第１図は本発明による開弁圧制御装置を具えだ燃料噴射
弁の中心線方向断面図、第２図は第１図に示すものの開
弁圧制御の説明用線図である。
（１）・・・ノズル （２）・・・弁体（３１・・・ノ
ズルホルダ （４）・・・グレン・／ヤピン （５）・
・・ブレノンヤスプリングｆ１３１ ＋７１・・プレッ
シャスプリングの」二下のばね受座（８）・・圧電素子
（９）・・・制御装置 ｔｌＯ） ｆｌｉｔ・・・回
転速度、負荷（入力信号） ＋１２１・・・ねじ部
（１３）・・・ナツト第１図
第２図
−同転速度FIG. 1 is a sectional view along the center line of a fuel injection valve equipped with a valve-opening pressure control device according to the present invention, and FIG. 2 is a diagram for explaining valve-opening pressure control of the fuel injection valve shown in FIG. 1. (1)...Nozzle (2)...Valve body (31...Nozzle holder (4)...Glen/Yapin (5)...
...Brennon Yaspring f131 +71...Two lower spring seats of the pressure spring (8)...Piezoelectric element (9)...Control device tlO) flit...Rotation speed, load (input signal) +121 ...Threaded part
(13)... Nut Figure 1 Figure 2 - Same rotation speed
Claims (1)
グの両端を受ける上下のばね受座のうちの」三方のばね
受座を印加される電圧の変化に伴って長さを変−える圧
電素子を含んで構成し、機関の回転速度および負荷を入
力信号としつつ上記圧電素子に加わる電圧の制御を行う
制御装置を設けたことを特徴とする、ディーゼル機関に
おける燃料噴射弁の開弁圧制御装置。A piezoelectric device that changes the length of the three spring seats of the upper and lower spring seats that receive both ends of the pressure spring that applies seating force to the valve body of the fuel injection valve as the applied voltage changes. Valve opening pressure control of a fuel injection valve in a diesel engine, characterized in that the control device is configured to include a piezoelectric element and controls the voltage applied to the piezoelectric element while using the rotational speed and load of the engine as input signals. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13168682A JPS5923060A (en) | 1982-07-28 | 1982-07-28 | Valve opening pressure controller for fuel injection valve in diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13168682A JPS5923060A (en) | 1982-07-28 | 1982-07-28 | Valve opening pressure controller for fuel injection valve in diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5923060A true JPS5923060A (en) | 1984-02-06 |
Family
ID=15063841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13168682A Pending JPS5923060A (en) | 1982-07-28 | 1982-07-28 | Valve opening pressure controller for fuel injection valve in diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5923060A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60180712A (en) * | 1984-01-27 | 1985-09-14 | フルト・フエルヴアルツングス‐ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Device for manufacturing or machining gear |
| JPS60180714A (en) * | 1984-01-27 | 1985-09-14 | フルト・フエルヴアルツングス‐ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Machine for manufacturing or machining gear |
| JPS6133817A (en) * | 1984-07-13 | 1986-02-17 | フルト・フエルヴアルツングス‐ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Device for manufacturing or machining gear-shaped work |
| US4669429A (en) * | 1984-03-29 | 1987-06-02 | Mazda Motor Corp. | Fuel injection system for diesel engine |
| JP2019152286A (en) * | 2018-03-05 | 2019-09-12 | 日本電産トーソク株式会社 | Spool valve device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328564A (en) * | 1976-08-31 | 1978-03-16 | Mitsubishi Heavy Ind Ltd | Gas-liquid separating method |
| JPS5666449A (en) * | 1979-11-05 | 1981-06-04 | Nissan Motor Co Ltd | Fuel injection valve |
-
1982
- 1982-07-28 JP JP13168682A patent/JPS5923060A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328564A (en) * | 1976-08-31 | 1978-03-16 | Mitsubishi Heavy Ind Ltd | Gas-liquid separating method |
| JPS5666449A (en) * | 1979-11-05 | 1981-06-04 | Nissan Motor Co Ltd | Fuel injection valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60180712A (en) * | 1984-01-27 | 1985-09-14 | フルト・フエルヴアルツングス‐ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Device for manufacturing or machining gear |
| JPS60180714A (en) * | 1984-01-27 | 1985-09-14 | フルト・フエルヴアルツングス‐ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Machine for manufacturing or machining gear |
| JPH03172B2 (en) * | 1984-01-27 | 1991-01-07 | Hurth Verwaltungs Gmbh | |
| JPH0313011B2 (en) * | 1984-01-27 | 1991-02-21 | Hurth Verwaltungs Gmbh | |
| US4669429A (en) * | 1984-03-29 | 1987-06-02 | Mazda Motor Corp. | Fuel injection system for diesel engine |
| JPS6133817A (en) * | 1984-07-13 | 1986-02-17 | フルト・フエルヴアルツングス‐ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Device for manufacturing or machining gear-shaped work |
| JP2019152286A (en) * | 2018-03-05 | 2019-09-12 | 日本電産トーソク株式会社 | Spool valve device |
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